Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Mobil Oil Corporation

Exxonmobil Technology and Engineering Company

Exxonmobil Engineering & Technology Company

Exxonmobil Oil Corporation

Doron Levin

James C Vartuli

Jose G Santiesteban

Wenyih Frank Lai

Scott Jeffrey Weigel

James Harding Beech, Jr

Jihad Mohammed Dakka

John Scott Buchanan

Hari Nair

Matthew Scott Ide

April D Ross

Shifang Luke Luo

Nicolas P Coute

Richard B Hall

Paul Podsiadlo

Michael Salciccioli

Stuart Leon Soled

Stephen Harold Brown

Stephen Neil Vaughn

Teng Xu

Sabato Miseo

Shun Chong Fung

Stephen John McCarthy

Michel Molinier

Joseph Ernest Baumgartner

Brett Thomas Loveless

Javier Guzman

Joseph E Gatt

Selma SheungNam Lawrence

Karl Gottlieb Strohmaier

Kun Wang

Jane C Cheng

Ivy Dawn Johnson

Christine Nicole Elia

Charles Morris Smith

David Charles Calabro

Randall David Partridge

Quanchang Li

Sebastian Carmen Reyes

Tilman W Beutel

Robert J Chimenti

Machteld M W Mertens

Charles Morris Yarbrough

Joshua I Cutler

Jon Edmond Randolph Stanat

Gordon Kennedy

Kiara M Benitez

Clarence D Chang

Mohsen N Harandi

James Richardson Lattner

Keith Holroyd Kuechler

Larry Lee Iaccino

Gary David Mohr

David Lawrence Stern

Kenneth Ray Clem

Tan-Jen Chen

Guang Cao

Lei Zhang

Chuansheng Bai

Jon E Stanat

Ajit Bhaskar Dandekar

Matthew J Vincent

Jean Willem Beeckman

John Di-Yi Ou

William Alois Weber

Timothy Lee Hilbert

Daria N Lissy

Alan Anthony Galuska

Mohan Kalyanaraman

James Peter Stokes

John Frances Brody

Lorenzo C DeCaul

Reuel Shinnar

Michael B Carroll

Christine Esther Kliewer

Vijay Swarup

Himanshu Gupta

Keith K Aldous

Kendall S Fruchey

Federico Barrai

Mosha H Zhao

William G Borghard

Tracie L Owens

Roberto Garcia

Robert A Crane

James H Beech

Seth McConkie Washburn

Jeffrey T Elks

William R Gunther

Jane Chi-Ya Cheng

Xiaoying Bao

Dane Clark Grenoble

John L Robbins

Partha Nandi

C Morris Smith

Jeremy W Bedard

El-Mekki El-Malki

Glenn C Wood

Michael Alan Steckel

Hans Georg Korsten

Methods and corresponding catalysts are provided for conversion of an aromatic feed containing Caromatics (particularly Caromatics) to form a converted product mixture comprising, e.g., benzene and/or xylenes. The aromatic feed can be converted in the presence of a catalyst that includes a silica binder, a mixture of a first zeolite having an MEL framework (such as ZSM-11 and/or an MFI framework (such as ZSM-5), and a second zeolite having an MOR framework, such as mordenite, particularly a mordenite synthesized using TEA or MTEA as a structure directing agent, and a metal. The catalyst can further include one or more metals supported on the catalyst.

Catalysts and processes for converting aromatics

A catalyst may include a metallic function derived from a metal constrained within cages and/or channels of a microporous material, wherein the cages and/or channels of the microporous material are defined by 8 tetrahedral atoms or fewer; and an acidic function derived from an additional zeolite having cages and/or channels defined by 10 or more tetrahedral atoms, wherein the microporous material providing the metallic function and additional zeolite providing the acidic function are coupled by a binder.

Conversion of heavy aromatics to lighter aromatics with low ring saturation and hydrocarbon cracking

Methods and corresponding catalysts are provided for conversion of an aromatics feed containing Caromatics, particularly Caromatics, to form a converted product mixture comprising, e.g., benzene and/or xylenes. The aromatic feed can be converted in the presence of a catalyst that includes a mixture of a first zeolite having an MEL framework, such as ZSM-11, and a second zeolite having a MOR framework, such as mordenite, particularly a mordenite synthesized using TEA or MTEA as a structure directing agent. The weight ratio of the first zeolite to the second zeolite in the catalyst can be from 0.3 to 1.2, or from 0.3 to 1.1, or from 0.3 to 1.0. The catalyst can further include one or more metals supported on the catalyst, such as a combination of metals.

Catalyst composition which comprises a first zeolite having a BEA* framework type and a second zeolite having a MOR framework type and a mesopore surface area of greater than 30 m/g is disclosed. These catalyst compositions are used to remove catalyst poisons from untreated feed streams having one or more impurities which cause deactivation of the downstream catalysts employed in hydrocarbon conversion processes, such as those that produce mono-alkylated aromatic compounds.

Catalyst compositions and their use in aromatic alkylation processes

Catalyst compositions comprising a zeolite and a mesoporous support or binder are disclosed. The mesoporous support or binder comprises a mesoporous metal oxide having a particle diameter of greater than or equal to 20 μm at 50% of the cumulative pore size distribution (d). Also disclosed are processes for producing a mono-alkylated aromatic compound (e.g., ethylbenzene or cumene) which exhibit improved yield of the mono-alkylated aromatic compound using alkylation catalysts comprising one or more of these catalyst compositions.

This disclosure provides improved processes for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene. In an embodiment, a process utilizes a methylation catalyst system comprising a molecular sieve catalyst and an auxiliary catalyst. The auxiliary catalyst comprises a metal element selected from Group 2, Group 3, the lanthanide series, the actinide series, and mixtures and combinations thereof. The auxiliary catalyst may comprise the oxide of the metal element. Deactivation of the molecular sieve catalyst can be reduced with the inclusion of the auxiliary catalyst in the methylation catalyst system.

Processes for converting benzene and/or toluene via methylation

A catalyst comprising a microporous crystalline metallosilicate having a Constraint Index of 12, or 10, or 8, or 6 or less, a binder, a Group 1 alkali metal or a compound thereof and/or a Group 2 alkaline earth metal or a compound thereof, a Group 10 metal or a compound thereof, and, optionally, a Group 11 metal or a compound thereof; wherein the catalyst is calcined in a first calcining step before the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof; and wherein the first calcining step includes heating the catalyst to first temperatures of greater than 500&#xb0; C.; and wherein the catalyst is calcined in a second calcining step after the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof wherein the second calcining step includes heating the catalyst to temperatures of greater than 400&#xb0; C.

Calcination of microporous molecular sieve catalysts

This disclosure provides improved processes for converting aromatic hydrocarbons, such as benzene/toluene, alkylation, transalkylation, or isomerization. In an embodiment, a process comprises utilizing a passivated reactor to reduce deactivation of a molecular sieve catalyst. Additional measures such as the use of an auxiliary catalyst and/or an elevated reactor pressure may be used to further reduce deactivation of the molecular sieve catalyst.

Processes for converting aromatic hydrocarbons using passivated reactor

A process and related system for producing para-xylene (PX). In an embodiment, the process includes (a) separating a feed stream comprising Caromatic hydrocarbons into a toluene containing stream and a Chydrocarbon containing stream and (b) contacting at least part of the toluene containing stream with a methylating agent in a methylation unit to convert toluene to xylenes and produce a methylated effluent stream. In addition, the process includes (c) recovering PX from the methylated effluent stream in (b) to produce a PX depleted stream and (d) transalkylating the PX depleted stream to produce a transalkylation effluent stream. The transalkylation effluent stream includes a higher concentration of toluene than the PX depleted stream. Further, the process includes (e) converting at least some ethylbenzene (EB) within the Chydrocarbon containing stream into toluene and (f) flowing the toluene converted in (e) to the contacting in (b).

Xylene production processes and systems

Catalysts including at least one microporous material (e.g., zeolite), an organosilica material binder, and at least one catalyst metal are provided herein. Methods of making the catalysts, preferably without surfactants and processes of using the catalysts, e.g., for aromatic hydrogenation, are also provided herein.

Catalysts and methods of making the same

Methods for removing impurities from a hydrocarbon stream using a guard bed material are disclosed. The guard bed material includes compositions which comprises a zeolite and a mesoporous support or binder. The zeolite has a Constraint Index of less than 3. The mesoporous support or binder comprises a mesoporous metal oxide having a particle diameter of greater than or equal to 20 &#x3bc;m at 50% of the cumulative pore size distribution (d), a pore volume of less than 1 cc/g, and an alumina content of greater than 75%, by weight. Also disclosed are processes for producing mono-alkylated aromatic compounds (e.g., ethylbenzene or cumene) using impure feed streams that are treated by the disclosed methods to remove impurities which act as catalyst poisons to downstream alkylation and/or transalkylation catalysts.

Methods for removing impurities from a hydrocarbon stream and their use in aromatic alkylation processes

Disclosed herein are methods of preparing dehydrogenation catalysts using non-halogen containing metal sources. The methods generally comprise the steps of providing a first solution comprising anions of a first metal selected from Group 14 of the Periodic Table of Elements, and impregnating an inorganic support with the first solution to obtain a first impregnated inorganic support, wherein the first solution has a pH value of less than the isoelectric point of the inorganic support. The dehydrogenation catalysts prepared in accordance with the methods of the present disclosure are typically free or substantially free of halogen species. Such catalysts may be particularly useful in the dehydrogenation of a feed comprising cyclohexane and/or methylcyclopentane.

Dehydrogenation catalysts and methods of making and using the same

Alkyl-demethylation of C2+-hydrocarbyl substituted aromatic hydrocarbons can be utilized to treat one or more of a heavy naphtha reformate stream, a hydrotreated SCN stream, a C8 aromatic hydrocarbon isomerization feed stream, a C9+ aromatic hydrocarbon transalkylation feed stream, and similar hydrocarbon streams to produce additional quantity of xylene products.

Processes for converting aromatic hydrocarbons via alkyl-demethylation

Transalkylation processes for converting aromatic hydrocarbons comprising alkyl-demethylation

Growing community of inventors

Highland Park, NJ, United States of America

Doron Levin